Decorticating-blade.



H. L. HEATH.

DEGORTIGATING BLADE.

, 11. Patented Jan. 13, 1914.

UN @TATES HERBERT LEE HEATH, OF MANILA, PHILIPPINE ISLANDS.

DECORTIGATING-BLADE.

1&8452773.

To all whom it may concern:

Be it known that T, HERBERT LEE HEivrI-I, citizen of the United. States,residing at Manila, Philippine Islands, have invented new and usefulImprovements in Decorticating-Blades, of which the following is aspecification.

My invention relates to an improvement in a device for the treatment ofhemp and like mat rials, in which it is desired to extract the valuablefiber from the stalks and outer casing in which it is contained.

It consists in the employment of a blade having a beveled edge andhaving the opposite side cut into a series of grooves which intersectthe beveled edge.

My invention consists in the parts and the combination and. constructionof parts as hereinafter more fully described and claimed. havingreference to the accompanying drawings, in wh.ich

Figure l is a perspective view partly broken away. Fig. 2 is a sectionon line XX Fig. 1. Fig. 8 is a fragmentary perspective, looking at theback side of the blade.

F or the purpose of separating valuable fiber from the stalk or husk inwhich it grows it is customary to break the stalk by various operationsand the fiber is then separated therefroni. My invention consists in anovel means of separating and grading the fiber. This means consists ofa blade A, the ends of which are provided with means to affix it in themachine in which itis to be used. The blade may stand in a vertical p0sition and may have one end pivoted and the other end tree to be raisedor depressed by a handle or other suitable means. One side of the bladeis cut into parallel grooves as Specification of Letters Patent.

Application filed March 25, 1911.

Patented J an. 13, 1914.

Serial No. 616,836.

shown at 2. The other side of the blade has iiS lower edge beveled as at3, the bevel ex tending across the blade so that the edge intersects thegrooves or channels upon the opposite side. This produces a saw-likeedge at the junction of the bevel and the grooved side, and this edgeserves when the fiber-carrying material is drawn over a table beneaththe edge to strip of? and separate the shell or husk, leaving the fiberin a clean condition. The fiber is also straightened out and is gradedby the size of the grooves or channels; these being out upon the side ofthe blade with reference to the fineness of the fiber which may berequired. It will be seen that as fast as wear takes place it is onlynecessary to grind the beveled portion until the intersecting groovesupon the opposite sides again form the series of small notches or teeth.which are required for the proper operation of the device.

Having thus described my invention what I claim and desire to secure byLetters Patent is A decorticating blade comprising a thick heavy blade,a series of shallow transverse parallel V-shaped ridges on one sidethereof, a smooth diagonal side meeting said ridged side at an acuteangle thereby forming an edge comprising pointed wedges adapted to splitand decorticate fibers which are drawn across the edge of the blade.

In testimony whereof I have hereunto set my hand in the presence of twosubscribing witnesses.

HERBERT LEE HEATH.

Witnesses:

ALBERT J. BRAZEE, lVILBUR S. l/ViLsoN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents. Washington, D. G.

